Spontaneous fission and α-decay half-lives of superheavy nuclei in different macroscopic energy models

Spontaneous fission half-lives (T-sf) of the heaviest nuclei are calculated in the macroscopic-microscopic approach based on the deformed Woods-Saxon potential. Four different models of the macroscopic energy are examined and their influence on the results is discussed. The calculations of (T-sf) are performed within WKB approximation. Multi-dimensional dynamical-programming method (MDP) is applied to minimize the action integral in a 3-dimensional space of deformation parameters describing the nuclear shape {beta(2), beta(4), beta(6) }.